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| Criterion |  Agile Ideal Days |  Decision Making PERT Estimation |  Product Strategy DIBB |  Business Strategy Business Model Stress Test |
|---|---|---|---|---|
Purposedifferent | When effort needs to be thought of as real working time, it offers a simple common denominator for comparison. It sorts work by value, risk, and delivery ability. The result is captured as Ideal Day Estimates, Assumption Notes, and Capacity Caveats. | On complex initiatives, a plain average tends to understate just how uncertain the outcome really is. It separates options, evaluation criteria, and open risks. The result is captured as a PERT Estimate, Expected Value, and Risk Notes. | DIBB helps clarify target groups, value, goals, and priorities by making the logic behind a decision explicit. It captures results as a DIBB document, belief list, bet list, and learning report. | A Business Model Stress Test checks how well a business model holds up under pressure and headwinds. It compares strengths, risks, market logic, and courses of action. The result is captured as a stress-test report and action plan per scenario. |
Complexitydifferent | Low | Medium | Low | High |
Timedifferent | 15-60 min | 15-45 min | 1-2 h | Half day |
Participantsdifferent | 2-9 | 1-8 | 2-8 | 3-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Ideal Day Estimates, Assumption Notes, Capacity Caveats | PERT Estimate, Expected Value, Risk Notes | DIBB document, Belief list, Bet list, Learning report | Stress Test Report, Action Plan per Scenario |
Tagsno overlap | EstimationEffortAgile | EstimationUncertaintyRisk | StrategyDecisionAssumptionsHypothesis | StrategyBusiness modelRiskDiagnosis |